The 180 - 400 metre wide asteroid 2015 NK13 will make a close pass (38.9 LD, 0.1001 AU) travelling at 11.15 km/second, to the Earth-Moon system on the 15th September 2015 @ 22:39 UT ±00:01.
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The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).
